AutoCAD Civil 3D 2011 is now shipping to all customers. You should get access to your copy shortly.
Depending on your election for receiving your product you will either receive a download link for the product or a physical shipment in the mail. If you want to change your delivery method from download to product shipment, you will need to hop into the Autodesk Subscription Portal and change your preferences.
Get ready for better performance, more new features and full support for 64bit machines.